Why do we need job descriptions?

We are a small company where everybody has to know everything, why do we need job descriptions?

Job descriptions are a pillar to the well-functioning of any size company.  Job descriptions are of use when writing job ad and related recruiting tools (interview guides, reference checks, employment contracts, etc).  Job descriptions are especially useful as a coaching tool for new employees as well as employees who are not functioning at the desired performance level.  Job descriptions are a necessary HR tool in the performance appraising process and new hire orientation program.  On a holistic level, job descriptions provide a tangible picture of who is doing what.  Similarly, the process of developing job descriptions is an excellent opportunity to reduce organizational redundancy and improving organizational efficiency.  We highly recommend all companies have job descriptions!